I was curious, and did some looking around.

The only info I can find for the film gives times for acutol and roll films: http://www.photomemorabilia.co.uk/Pa...Acu_Range.html

That gives times of 11 minutes for 35mm and 12 minutes for 120.

If you look up Acutol on the Massive Development chart, it recommends a bunch of times, but they include 12 minutes for both FP4+ and T-Max 400.

What HC110 times do you use for FP4+ and T-Max 400? I would probably start out with the FP4+ time.